Device for producing the helicoidal deformation of the planes of aeroplanes.



L. M. J. U. LEVAVASSBUR. I DEVICE FOR PRODUCING THE HELIOOIDAL DBFORMATION OF THE PLANES 0F AEROPLANES.

APPLIUATION FILED JUNE 24, 1910.

1,006,106, 1 v Patented Oct. 17, 1911.

lbw/M555 muggy UNITED STATES PATENT OFFICE.

LEON MARIE JOSEPH CLEMENT LEVAVASSEUR, OF PUTEAUX, FRANCE, ASSIGNOR T0 LA SOCIETE ANTOINETTE, 0F PUTEAUX, FRANCE.

DEVICE FOR PRODUCING THE HELICOIDAL DEFORMATION OF THE PLANES OF AEROPLANES.

Specification of Letters Patent.

Patented Oct. 17, 1911.

Application filed June 24, 1910. Serial No. 588,685.

To all whom it may concern:

Be it known that I, LEON MARIE Josnrn CLEMENT LEVAVASSEUR, citizen of the Republic of France, residing at Puteaux, Seine, France, have invented certain new and useful Improvements in Devices for Producing the Helicoidal Deformation of the Planes of Aeroplanes, of which the following is a specification.

This invention relates to a device by means of which the helicoidal deformation of the planes of aeroplanes can be effected so as to avoid turning over under the action of side winds.

A construction of the device according to this invention is illustrated by way of example in the accompanying drawing which shows it diagrammatically in perspective.

The planes at a arranged above the body I) are each constructed of canvas stretched on a frame formed by a fixed rod cand a rod cZ pivoted at e, the two rods being connected by cross-bars f. The two movable rods (Z are connected respectivel above and below the planes by flexlble cables 9 and h secured at m and n to the said rods. The cable 9 passes over a pulley 5 arranged at the end of the upper vertical arm j. The cable h passes over a pulley is mounted at the end of the bottom vertical arm Z. I

An operating or controlling mechanism is provided, said mechanism being constituted in the construction illustrated by a hand wheel 0, a pulley Q keyed to the spindle of the hand wheel cover which and over the guide rollers r passes the cable 39, and a lever s secured to the pulley 1c, and having the cable 77 secured to its ends, so that the operator can rotate the pulley 7c in one or the other direction. Assuming that the movement imparted to the pulley 7c is that shown by the arrow 1, the cable It will be moved in the direction of the arrows. 2, while the cable or chain g will be moved in the direction of the arrows 3. The result obtained will be an angular movementof the pivoted rod cl of the right plane above its original position, and an angular movement to the same extent of the pivoted rod 42 of the left plane below its original position. In that way, as shown in dotted lines, there will be obtained a certain warping or helicoidal deformation of the zero at the pivot point e and increase gradulanes a a which will be ally toward the end of the rods d where the deformation in question will be the maximum. By giving to the pulley k a movement of rotation in a direction opposite to the arrow 1, the deformation of the Planes will be in the opposite direction, that is to say, the planes will be warped in the followin mannerz'the right wing above, and the le t- Wing below, so that by suitable manipulation the action of lateral winds will be counteracted, whether they act on one or on the other side of the apparatus.

Claim:

1. In a flying-machine, a pair of Wings extending transverse to the line of flight, a

rigid stay to which the front edges of said wings are secured, a pair of pivoted stays to which the rear edges of said wings are secured, each of such stays being attached to the corresponding wing substantially 2. In a flying-machine, a pair of wings extending transverse to the line of flight, each of said wings normally lying in a plane, said planes intersecting in a line parallelwith the axis of'fiight, a common rigid stay to which the front edges of both of said wings are secured, a pair of pivoted stays to which the rear edges of said wings are secured, said latter stays being pivoted at a fixedcommon point onthe line of intersection 'of the planes, and means for simultaneously moving said last mentioned stays about such fixed pivot to raise one and lower the other, whereby a helicoidal deformation of said wings is produced.

In testimon whereof I affix my signature in presence 0 two witnesses.

LEON MARIE JOSEPH.

CLEMENT LEVAVASSEUR.

Witnesses EMILE Lnnnn'r,

H. O. Coxn. 

